A new eocrinoid from the Guanshan Biota (Cambrian Series 2, Stage 4), with implication of the development of different attachment modes in early Cambrian |
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| Institution: | 1. Yunnan Key Laboratory for Palaeobiology & MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment, Institute of Palaeontology, Yunnan University, Kunming 650091, China;2. Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security, Yunnan University, Kunming 650091, China;3. Management Committee of the Chengjiang Fossil Site World Heritage, Chengjiang, China;4. Department of Geology, University of Kansas, 1457 Jayhawk Boulevard, Lawrence, KS 66045, USA;5. Natural History Museum, Cromwell Road, London SW7 5BD, UK;6. Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: | Eocrinoids are scarce in the Guanshan Biota (Cambrian Series 2, Stage 4), Yunnan Province, southwest China. Here, we introduce a new gogiid: Kunmingeocrinus cupuliformis n. gen. n. sp. which is characterized by a short stalk and a well-developed attachment disc. Preservation may indicate a weakly biomineralized body for the new taxon. Morphological similarities between the new taxon and other eocrinoids with attachment discs from Cambrian Lagerstätten of Guizhou Province (Series 2, Stage 4 and Miaolingian, Wuliuan) might suggest a similar mode of life. The eocrinoids from the Guanshan Biota possibly utilized different attachment modes. |
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| Keywords: | Echinodermata Eocrinoidea attachment disc Cambrian Lagerstätten |
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